Ci can no more generate documentation
Job [#2637037](https://foss.heptapod.net/tryton/tryton/-/jobs/2637037) failed for 4b2aeca68115110ce65b3a0bf1bef1367f8ebd56:
because the new docker image of sphinxdoc/sphinx does not contain anymore setuptools which is required by `doc/conf.py` because it runs `setup.py` to retrieve the description and version.
issue